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// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
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// KIND, either express or implied.  See the License for the
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package org.apache.doris.nereids.trees.plans.commands.info;

import org.apache.doris.analysis.SetType;
import org.apache.doris.common.UserException;
import org.apache.doris.nereids.trees.expressions.Expression;
import org.apache.doris.nereids.trees.expressions.literal.Literal;
import org.apache.doris.nereids.util.ExpressionUtils;
import org.apache.doris.qe.ConnectContext;

/**
 * SetUserDefinedVarOp
 */
public class SetUserDefinedVarOp extends SetVarOp {
    private final String name;
    private final Expression expression;
    private Literal value;

    public SetUserDefinedVarOp(String name, Expression expression) {
        super(SetType.USER);
        this.name = name;
        this.expression = expression;
    }

    @Override
    public void validate(ConnectContext ctx) throws UserException {
        value = ExpressionUtils.analyzeAndFoldToLiteral(ctx, expression);
    }

    @Override
    public void run(ConnectContext ctx) throws Exception {
        ctx.setUserVar(name, value.toLegacyLiteral());
    }
}
